With the addition of Adoulin and the upcoming Relic/Mythic/Empyrean updates, there are many people complaining about the availability of heavy metal and riftdross/riftcinder because many people are no longer participating in voidwatch. It seems it would be wise to counteract this a bit by adding additional ways to acquire these items.
Alexandrite in the past was really rare because few were doing Salvage. In response to this, the Dev Team put alexandrite drops in Nyzul Isle II and Salvage II to make mythics more of a possibility.
Ancient currency from dynamis is still something that is soloable, but it is also something that can be obtained as random rewards from Campaign as well as Meeble burrows.
Are there any plans to counteract the decline of voidwatch affecting Empyrean weapons?
One possibility that I can think of would be adding Heavy metal pouches and dross/cinder at a low drop rate (not too high to flood, not too low to never see) to Abyssea NMs that drop items used for Empyrean weapons (e.g. Briareus, Glavoid, Azdaja, Sobek, etc).
Just something to consider as voidwatch is on the decline, and Empyrean weapons may fall into the same problem that mythics used to have.